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https://github.com/koreader/koreader
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76 lines
2.1 KiB
Lua
76 lines
2.1 KiB
Lua
--[[--
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Widget that shows a checkmark (`✓`), an empty box (`□`)
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or nothing of the same size.
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Example:
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local CheckMark = require("ui/widget/CheckMark")
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local parent_widget = FrameContainer:new{}
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table.insert(parent_widget, CheckMark:new{
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checkable = false, -- shows nothing when false, defaults to true
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checked = function() end, -- whether the box has a checkmark in it
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})
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UIManager:show(parent_widget)
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]]
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local Blitbuffer = require("ffi/blitbuffer")
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local Font = require("ui/font")
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local InputContainer = require("ui/widget/container/inputcontainer")
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local OverlapGroup = require("ui/widget/overlapgroup")
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local TextWidget = require("ui/widget/textwidget")
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local CheckMark = InputContainer:new{
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checkable = true,
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checked = false,
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enabled = true,
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face = Font:getFace("smallinfofont"),
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width = 0,
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height = 0,
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}
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function CheckMark:init()
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local checked_widget = TextWidget:new{
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text = " ✓", -- preceded by thin space for better alignment
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face = self.face,
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}
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local unchecked_widget = TextWidget:new{
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text = "▢ ",
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face = self.face,
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}
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local disabled_checked_widget = TextWidget:new{
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text = " ✓", -- preceded by thin space for better alignment
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face = self.face,
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fgcolor = Blitbuffer.COLOR_GREY,
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}
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local disabled_unchecked_widget = TextWidget:new{
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text = "▢ ",
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face = self.face,
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fgcolor = Blitbuffer.COLOR_GREY,
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}
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local empty_widget = TextWidget:new{
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text = "",
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face = self.face,
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}
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local widget
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if self.checkable then
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if self.enabled then
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widget = OverlapGroup:new{
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(self.checked and checked_widget or empty_widget),
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unchecked_widget
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}
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else
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widget = OverlapGroup:new{
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(self.checked and disabled_checked_widget or empty_widget),
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disabled_unchecked_widget
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}
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end
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else
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widget = empty_widget
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end
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self[1] = widget
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self.dimen = unchecked_widget:getSize()
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end
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return CheckMark
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